Discriminating the progenitor type of supernova remnants with Iron K-shell emission
Supernova remnants (SNRs) retain crucial information about both their parent explosion and circumstellar material left behind by their progenitor. However, the complexity of the interaction between supernova ejecta and ambient medium often blurs this information, and it is not uncommon for the basic...
| Main Authors: | , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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IOP Publishing
2015
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| Online Access: | http://hdl.handle.net/1721.1/92799 https://orcid.org/0000-0002-3243-727X |
| _version_ | 1826205088443531264 |
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| author | Yamaguchi, Hiroya Badenes, Carles Petre, Robert Nakano, Toshio Castro, Daniel Enoto, Teruaki Hiraga, Junko S. Hughes, John P. Maeda, Yoshitomo Nobukawa, Masayoshi Safi-Harb, Samar Slane, Patrick O. Smith, Randall K. Uchida, Hiroyuki |
| author2 | MIT Kavli Institute for Astrophysics and Space Research |
| author_facet | MIT Kavli Institute for Astrophysics and Space Research Yamaguchi, Hiroya Badenes, Carles Petre, Robert Nakano, Toshio Castro, Daniel Enoto, Teruaki Hiraga, Junko S. Hughes, John P. Maeda, Yoshitomo Nobukawa, Masayoshi Safi-Harb, Samar Slane, Patrick O. Smith, Randall K. Uchida, Hiroyuki |
| author_sort | Yamaguchi, Hiroya |
| collection | MIT |
| description | Supernova remnants (SNRs) retain crucial information about both their parent explosion and circumstellar material left behind by their progenitor. However, the complexity of the interaction between supernova ejecta and ambient medium often blurs this information, and it is not uncommon for the basic progenitor type (Ia or core-collapse) of well-studied remnants to remain uncertain. Here we present a powerful new observational diagnostic to discriminate between progenitor types and constrain the ambient medium density of SNRs using solely Fe K-shell X-ray emission. We analyze all extant Suzaku observations of SNRs and detect Fe Kα emission from 23 young or middle-aged remnants, including five first detections (IC 443, G292.0+1.8, G337.2-0.7, N49, and N63A). The Fe Kα centroids clearly separate progenitor types, with the Fe-rich ejecta in Type Ia remnants being significantly less ionized than in core-collapse SNRs. Within each progenitor group, the Fe Kα luminosity and centroid are well correlated, with more luminous objects having more highly ionized Fe. Our results indicate that there is a strong connection between explosion type and ambient medium density, and suggest that Type Ia supernova progenitors do not substantially modify their surroundings at radii of up to several parsecs. We also detect a K-shell radiative recombination continuum of Fe in W49B and IC 443, implying a strong circumstellar interaction in the early evolutionary phases of these core-collapse remnants. |
| first_indexed | 2024-09-23T13:06:33Z |
| format | Article |
| id | mit-1721.1/92799 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:06:33Z |
| publishDate | 2015 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/927992022-09-28T12:03:56Z Discriminating the progenitor type of supernova remnants with Iron K-shell emission Yamaguchi, Hiroya Badenes, Carles Petre, Robert Nakano, Toshio Castro, Daniel Enoto, Teruaki Hiraga, Junko S. Hughes, John P. Maeda, Yoshitomo Nobukawa, Masayoshi Safi-Harb, Samar Slane, Patrick O. Smith, Randall K. Uchida, Hiroyuki MIT Kavli Institute for Astrophysics and Space Research Castro, Daniel Supernova remnants (SNRs) retain crucial information about both their parent explosion and circumstellar material left behind by their progenitor. However, the complexity of the interaction between supernova ejecta and ambient medium often blurs this information, and it is not uncommon for the basic progenitor type (Ia or core-collapse) of well-studied remnants to remain uncertain. Here we present a powerful new observational diagnostic to discriminate between progenitor types and constrain the ambient medium density of SNRs using solely Fe K-shell X-ray emission. We analyze all extant Suzaku observations of SNRs and detect Fe Kα emission from 23 young or middle-aged remnants, including five first detections (IC 443, G292.0+1.8, G337.2-0.7, N49, and N63A). The Fe Kα centroids clearly separate progenitor types, with the Fe-rich ejecta in Type Ia remnants being significantly less ionized than in core-collapse SNRs. Within each progenitor group, the Fe Kα luminosity and centroid are well correlated, with more luminous objects having more highly ionized Fe. Our results indicate that there is a strong connection between explosion type and ambient medium density, and suggest that Type Ia supernova progenitors do not substantially modify their surroundings at radii of up to several parsecs. We also detect a K-shell radiative recombination continuum of Fe in W49B and IC 443, implying a strong circumstellar interaction in the early evolutionary phases of these core-collapse remnants. 2015-01-12T19:15:55Z 2015-01-12T19:15:55Z 2014-04 2014-03 Article http://purl.org/eprint/type/JournalArticle 2041-8205 2041-8213 http://hdl.handle.net/1721.1/92799 Yamaguchi, Hiroya, Carles Badenes, Robert Petre, Toshio Nakano, Daniel Castro, Teruaki Enoto, Junko S. Hiraga, et al. “Discriminating the Progenitor Type of Supernova Remnants with Iron K-Shell Emission.” The Astrophysical Journal 785, no. 2 (April 3, 2014): L27. © 2014 The American Astronomical Society https://orcid.org/0000-0002-3243-727X en_US http://dx.doi.org/10.1088/2041-8205/785/2/l27 Astrophysical Journal. Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing American Astronomical Society |
| spellingShingle | Yamaguchi, Hiroya Badenes, Carles Petre, Robert Nakano, Toshio Castro, Daniel Enoto, Teruaki Hiraga, Junko S. Hughes, John P. Maeda, Yoshitomo Nobukawa, Masayoshi Safi-Harb, Samar Slane, Patrick O. Smith, Randall K. Uchida, Hiroyuki Discriminating the progenitor type of supernova remnants with Iron K-shell emission |
| title | Discriminating the progenitor type of supernova remnants with Iron K-shell emission |
| title_full | Discriminating the progenitor type of supernova remnants with Iron K-shell emission |
| title_fullStr | Discriminating the progenitor type of supernova remnants with Iron K-shell emission |
| title_full_unstemmed | Discriminating the progenitor type of supernova remnants with Iron K-shell emission |
| title_short | Discriminating the progenitor type of supernova remnants with Iron K-shell emission |
| title_sort | discriminating the progenitor type of supernova remnants with iron k shell emission |
| url | http://hdl.handle.net/1721.1/92799 https://orcid.org/0000-0002-3243-727X |
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